package com.ewuyong.concurrence;

import com.ewuyong.concurrence.annotations.NotThreadSafe;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.*;

@Slf4j
@NotThreadSafe
public class ConcurrencyTest {

    //请求总数
    public static int clientTotal = 5000;

    public static int threadTotal = 200;

    public static int count = 0;


    public static void main(String[] args) throws InterruptedException {
        ExecutorService executorService = Executors.newCachedThreadPool();
        final Semaphore semaphore = new Semaphore(threadTotal);
        final CountDownLatch countDownLatch = new CountDownLatch(clientTotal);
        for (int i = 0; i < clientTotal; i++){
            executorService.execute(new Runnable() {
                @Override
                public void run() {
                    try {
                        semaphore.acquire();
                        add();
                        semaphore.release();
                    }catch (Exception e) {
                        log.error("exception", e);
                    }
                    countDownLatch.countDown();
                }
            });
        }
        countDownLatch.await();
        executorService.shutdown();
        log.info("count:{} ", count);


    }

    private static void add() {
        count++;
    }
}
